Complete refactoring to move Recipes into Items

* Changed "version" to "dataVersion" in data format
* Changed the "modName" and "modVersion" fields on the ModVersion
  class to remove the "mod" prefix and changed the data format to
  match
* Change the Stack class to use the itemSlug instead of the item
  itself
* Update the ModVersion and ModPack classes to include methods for
  recording a correspondence between slugs and names. Update code
  which displays items from stacks to use these methods to determine
  display names.
* Add a reference from Recipe back to the item it creates

src/data/applied_energetics/recipes.json

@@ -1,7 +1,7 @@
 {
-    "version": 1,
-    "mod_name": "Applied Energetics",
-    "mod_version": "rv-12b",
+    "dataVersion": 1,
+    "name": "Applied Energetics",
+    "version": "rv-12b",
     "description": "Crafting recipes from Applied Energetics, by AlgorithmX2",
     "recipes": [
         {

src/data/buildcraft/recipes.json

@@ -1,7 +1,7 @@
 {
-    "version": 1,
-    "mod_name": "BuildCraft",
-    "mod_version": "3.0",
+    "dataVersion": 1,
+    "name": "BuildCraft",
+    "version": "3.0",
     "description": "Crafting recipes from BuildCraft, by SpaceToad",
     "recipes": [
         {

src/data/gravisuite/recipes.json

@@ -1,7 +1,7 @@
 {
-    "version": 1,
-    "mod_name": "GraviSuite",
-    "mod_version": "unknown",
+    "dataVersion": 1,
+    "name": "GraviSuite",
+    "version": "1.0",
     "description": "Crafting recipes from GraviSuite, by flotschi301",
     "recipes": [
         {

src/data/industrial_craft/recipes.json

@@ -1,7 +1,7 @@
 {
-    "version": 1,
-    "mod_name": "Industrial Craft",
-    "mod_version": "2.0",
+    "dataVersion": 1,
+    "name": "Industrial Craft",
+    "version": "2.0",
     "description": "Crafting recipes from IndustrialCraft, by Alblaka",
     "recipes": [
         {

src/data/minecraft/recipes.json

@@ -1,7 +1,7 @@
 {
-    "version": 1,
-    "mod_name": "Minecraft",
-    "mod_version": "1.7.10",
+    "dataVersion": 1,
+    "name": "Minecraft",
+    "version": "1.7.10",
     "description": "Crafting recipes from vanilla Minecraft",
     "raw_materials": [
         "Coal",

src/data/more_blocks/recipes.json

@@ -1,7 +1,7 @@
 {
-    "version": 1,
-    "mod_name": "MoreBlocks",
-    "mod_version": "1.0",
+    "dataVersion": 1,
+    "name": "MoreBlocks",
+    "version": "1.0",
     "description": "Crafting recipes from More Blocks Mod, by MCE626",
     "recipes": [
         {

src/data/thermal_expansion/recipes.json

@@ -1,7 +1,7 @@
 {
-    "version": 1,
-    "mod_name": "Thermal Expansion",
-    "mod_version": "2.x",
+    "dataVersion": 1,
+    "name": "Thermal Expansion",
+    "version": "2.x",
     "description": "Crafting Recipes from Thermal Expansion, by King Lemming and the CoFH team",
     "recipes": [
         {